Cathodoluminescence in europium doped KCl crystals

R. Aceves*, R. Pérez-Salas, M. Barboza-Flores, U. Pal, M. Herrera Zaldivar, J. Piqueras

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Spectral cathodoluminescence of KCl:Eu2+ (0.2% wt) crystals has been measured at different temperatures. In the 80-300 K temperature range the luminescence consists of three main broad emission bands with maxima around 418, 452, and 619nm. Based on photoluminescence studies the 418nm could be associated with the 4f65d (t2g)-4f7 (8S7/2) radiative transition of the Eu2+ ions in the KCl matrix. The band with maximum at 452 nm could be associated with the α-center emission as in pure KCl. The 619 nm band has been considered as a part of the luminescence modified by the absorption of the F centers formed during irradiation. The intensity of all these bands versus temperature shows a minimum around 150 K, an indication of a low defect mobility produced with the electronbeam irradiation.

Original languageEnglish
Pages (from-to)313-317
Number of pages5
JournalRadiation Effects and Defects in Solids
Issue number1-4
StatePublished - 2001


  • Alkali halides
  • Cathodoluminescence
  • Defects
  • Europium
  • Excitons
  • F centers


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